Santos, Claudio Gouvea dosPasa, Vanya Marcia DuarteMorais, Willy Ank dePasa, Vanya Marcia Duarte2017-05-232017-05-232010SANTOS, C. G. dos et al. Phenolic foams from wood tar resols. Journal of Applied Polymer Science , v. 115, p. 923-927, 2010. Disponível em: <http://onlinelibrary.wiley.com/doi/10.1002/app.30885/abstract>. Acesso em: 20 abr. 2017.1097-4628http://www.repositorio.ufop.br/handle/123456789/7789This article investigates resole-type phenolic foams, in which 40% phenol was substituted with distilled oily fractions from wood tar. Different proportions of blowing agent, hexamethylenetetramine, and stabilizer, a sodium alkyl sulfate surface active agent, were used to produce a series of rigid foams, which were characterized by curing index, density and hardness. The average curing index was about 90% and densities ranged from 480 to 960 kg.m 3. A fractal dimension (Df) approach was used to assess the homogeneity of pores within the foams and an average (dimensionless) value of 2.6 was found, indicating a non uniform structure. Compressive strength tests of the foams gave values above 1.0 MPa, which is higher than those for typical phenolic foams.en-USrestritoHenolicsCellular plasticsRigid foamsFractal dimensionArtigo publicado em periodicohttp://onlinelibrary.wiley.com/doi/10.1002/app.30885/abstracthttps://doi.org/10.1002/app.30885